A water-light hyaluronic acid serum with five molecular weights plus niacinamide and panthenol. Exceptional value for hydration-focused routines; works beautifully layered under oil-based serums.
The verdict
What this is good for
✓ Great forDrynessDamaged Barriersensitive
The formulation
Ingredient stack
Each ingredient is listed in descending concentration. Above the 1% line the order is regulated — below it, brands can list in any order.
Ingredients above the dashed gold line are dosed above 1% (the regulatory threshold) — these are what the formulation is really built on.
A glycosaminoglycan naturally present throughout the body, holding up to 1000x its weight in water. The most powerful naturally occurring humectant. Multi-weight HA (high, medium and low molecular weight) delivers hydration at different skin depths. Production declines significantly with age.
The most versatile and universally tolerated skincare active. Inhibits melanin transfer (fading dark spots), reduces sebum by up to 68%, strengthens the skin barrier via ceramide synthesis, calms inflammatory pathways to reduce redness, and visibly minimises pores over 4–8 weeks. Works at any pH and pairs with virtually every other active.
Converts to pantothenic acid on absorption. Functions as a powerful humectant, anti-inflammatory, and wound-healing accelerant promoting keratinocyte proliferation. Essential for damaged-skin recovery. Suitable for any skin type, including post-procedure and reactive skin.
The closest active-matched alternative is the Haruharu Wonder Black Rice Hyaluronic Serum (85% active overlap). We found 6 options that share this product’s hero actives.
Skin Stacker is independent and receives no payment from any brand. Ingredient analysis is based on publicly disclosed INCI lists and the peer-reviewed literature. Formulations change — always re-check the label on your specific batch before using.